package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 添加菜品或套餐分类
     *
     * @param categoryDTO
     */
    @Override
    public void insertCate(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

        category.setStatus(StatusConstant.ENABLE);
//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());
//        category.setCreateUser(BaseContext.getCurrentId());
//        category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.insertCate(category);
    }

    /**
     * 分页查询
     *
     * @param pageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO pageQueryDTO) {
        PageHelper.startPage(pageQueryDTO.getPage(), pageQueryDTO.getPageSize());
        Page<Category> categories = categoryMapper.pageQuery(pageQueryDTO.getName(), pageQueryDTO.getType());
        return new PageResult(categories.getTotal(), categories.getResult());
    }

    /**
     * 根据id删除分类
     *
     * @param id
     */
    @Override
    public void deleteCate(Long id) {
        Integer countDishCate = dishMapper.countByCateId(id);
        if (countDishCate != null) {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        Integer countSetmealCate = setmealMapper.countByCateId(id);
        if (countSetmealCate != null) {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        categoryMapper.deleteCate(id);
    }

    /**
     * 修改分类信息
     *
     * @param categoryDTO
     */
    @Override
    public void updateCate(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO, category);

//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.updateCate(category);
    }

    /**
     * 启用或禁用分类
     *
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder().status(status).id(id).build();
        categoryMapper.updateCate(category);
    }

    /**
     * 根据类型查询分类
     *
     * @param type
     * @return
     */
    @Override
    public List<Category> queryByType(Integer type) {
        List<Category> categories = categoryMapper.queryByType(type);
        return categories;
    }

    /**
     * 查询分类
     *
     * @return
     */
    @Override
    public List<Category> list() {
        List<Category> categories = categoryMapper.list();
        return categories;
    }
}
